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I’m Adam Lee, a Full-Stack Engineer based in São Paulo with 8+ years of experience building scalable, high-performance web applications for U.S.-based industry and consulting clients. I enjoy translating complex requirements into clean, maintainable products—whether that means modernizing legacy systems, building role-based platforms, or improving user experience with accessible, mobile-first interfaces. Across my recent roles, I’ve led end-to-end development of SaaS solutions (front-to-back with React and Node.js), implemented secure APIs and authentication, and optimized performance through thoughtful data modeling and system architecture. I also value collaboration with UX/design and domain experts, and I’m comfortable owning delivery from architecture and SDLC through CI/CD, testing, observability, and production releases.…I’m Adam Lee, a Full-Stack Engineer based in São Paulo with 8+ years of experience building scalable, high-performance web applications for U.S.-based industry and consulting clients. I enjoy translating complex requirements into clean, maintainable products—whether that means modernizing legacy systems, building role-based platforms, or improving user experience with accessible, mobile-first interfaces. Across my recent roles, I’ve led end-to-end development of SaaS solutions (front-to-back with React and Node.js), implemented secure APIs and authentication, and optimized performance through thoughtful data modeling and system architecture. I also value collaboration with UX/design and domain experts, and I’m comfortable owning delivery from architecture and SDLC through CI/CD, testing, observability, and production releases.

Adam Lee

Full Stack Developer, Web Developer, Software Engineer, +2

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I’m Adam Lee, a Full-Stack Engineer based in São Paulo with 8+ years of experience building scalable, high-performance web applications for U.S.-based industry and consulting clients. I enjoy translating complex requirements into clean, maintainable products—whether that means modernizing legacy systems, building role-based platforms, or improving user experience with accessible, mobile-first interfaces. Across my recent roles, I’ve led end-to-end development of SaaS solutions (front-to-back with React and Node.js), implemented secure APIs and authentication, and optimized performance through thoughtful data modeling and system architecture. I also value collaboration with UX/design and domain experts, and I’m comfortable owning delivery from architecture and SDLC through CI/CD, testing, observability, and production releases.…I’m Adam Lee, a Full-Stack Engineer based in São Paulo with 8+ years of experience building scalable, high-performance web applications for U.S.-based industry and consulting clients. I enjoy translating complex requirements into clean, maintainable products—whether that means modernizing legacy systems, building role-based platforms, or improving user experience with accessible, mobile-first interfaces. Across my recent roles, I’ve led end-to-end development of SaaS solutions (front-to-back with React and Node.js), implemented secure APIs and authentication, and optimized performance through thoughtful data modeling and system architecture. I also value collaboration with UX/design and domain experts, and I’m comfortable owning delivery from architecture and SDLC through CI/CD, testing, observability, and production releases.

Available to hire

I’m Adam Lee, a Full-Stack Engineer based in São Paulo with 8+ years of experience building scalable, high-performance web applications for U.S.-based industry and consulting clients. I enjoy translating complex requirements into clean, maintainable products—whether that means modernizing legacy systems, building role-based platforms, or improving user experience with accessible, mobile-first interfaces.

Across my recent roles, I’ve led end-to-end development of SaaS solutions (front-to-back with React and Node.js), implemented secure APIs and authentication, and optimized performance through thoughtful data modeling and system architecture. I also value collaboration with UX/design and domain experts, and I’m comfortable owning delivery from architecture and SDLC through CI/CD, testing, observability, and production releases.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Full Stack Engineer at PointLeader Predictive Analytics, Inc.

June 1, 2024 - May 1, 2025

Led end-to-end development of a role-based SaaS assessment platform, migrating from a legacy .NET monolith to a modern MERN architecture. Built a high-performance React/TypeScript frontend with Redux (including Saga/Persist) and interactive assessment workflows, real-time analytics, and executive dashboards. Implemented backend services with Node.js and MongoDB, improving data retrieval and reducing server response errors, and delivered secure Express/Mongoose REST APIs with JWT auth, multi-tenant permissions, and optimized data models for high-volume assessments. Integrated Stripe for membership and recurring billing and Mailgun for transactional/marketing email workflows. Set up CI/CD with GitHub Actions and Azure DevOps for automated builds, linting, tests, and zero-downtime deployments; contributed to Next.js SSR to improve SEO and initial load speed.

Full Stack Engineer at Kforce Inc.

August 1, 2020 - May 1, 2024

Built and maintained cloud-native microservices using Python (FastAPI) and Node.js (Express/Nest.js) to power secure, high-performance APIs for healthcare workflows such as patient records, scheduling, and messaging. Developed accessible, responsive frontend applications with React and Next.js. Drove performance improvements across web delivery and user engagement. Migrated legacy monoliths to microservices to improve modularity and deployment reliability. Implemented secure APIs with AWS services (Lambda/API Gateway) and JWT/OAuth2 authentication, supporting HIPAA-compliant data access and interoperability. Integrated third-party healthcare systems with caching and rate limiting, designed REST APIs and webhooks including HL7 FHIR integrations, and improved observability and reliability with telemetry tools and automated testing.

Full Stack Engineer at COOP by Ryder

March 1, 2018 - July 1, 2020

Architected and delivered COOP by Ryder’s full-stack platform using a microservices architecture to support on-demand commercial fleet sharing. Built responsive web applications with React.js, TypeScript, Redux, and Webpack, and cross-platform mobile apps with React Native for fleet browsing, reservations, and management. Developed scalable backend microservices with NestJS integrated with MongoDB and PostgreSQL, handling real-time availability, multi-tenant operations, role-based access control, and high-volume transactions. Owned the end-to-end SDLC including requirements, agile delivery, automated testing, CI/CD, deployments, and monitoring. Implemented observability and performance optimization, and mentored team members with documentation and best practices.